Finding the Fourth Proportional to 31,106.32, 42,927.28 and 16,959.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,106.32 : 42,927.28 = 16,959.76 : x
2. Step 2: Convert to fraction form
   31,106.32/42,927.28 = 16,959.76/x
3. Step 3: Cross multiply
   31,106.32x = 42,927.28 × 16,959.76
4. Step 4: Simplify right side
   31,106.32x = 728,036,366.25
5. Step 5: Solve for x
   x = 728,036,366.25/31,106.32
6. Step 6: Final answer
   x = 23,404.77